A. The following design standards are hereby adopted in the Historic District, copies of which shall be kept available in the office of the City Planner:
1. “The Secretary of the Interior’s Standards for Rehabilitation and Guidelines for Rehabilitating Historic Buildings,” as they now read or are hereafter amended;
2. “Snohomish Historic District Design Standards,” as adopted by a resolution of the City Council.
B. In the event of conflict between the above standards, the Secretary of the Interior’s Standards shall control.